/**
 * \addtogroup httpd
 * @{
 */

/**
 * \file
 *         Web server script interface
 * \author
 *         Adam Dunkels <adam@sics.se>
 *
 */

/*
 * Copyright (c) 2001-2006, Adam Dunkels.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This file is part of the uIP TCP/IP stack.
 *
 * $Id: httpd-cgi.c,v 1.2 2006/06/11 21:46:37 adam Exp $
 *
 */

#include "uip.h"
#include "psock.h"
#include "httpd.h"
#include "httpd-cgi.h"
#include "httpd-fs.h"

#include "fire.h"
#include "slc.h"

#include <stdio.h>
#include <string.h>

HTTPD_CGI_CALL(file, "file-stats", file_stats);
HTTPD_CGI_CALL(tcp, "tcp-connections", tcp_stats);
HTTPD_CGI_CALL(net, "net-stats", net_stats);
HTTPD_CGI_CALL(led, "led-level", led_level);
HTTPD_CGI_CALL(ledset, "led", led_set);

HTTPD_CGI_CALL(iot, "iot-stats", iot_stats);

static const struct httpd_cgi_call *calls[] = { &file, &tcp, &net, &led, &ledset, &iot, NULL };

/*---------------------------------------------------------------------------*/
static
PT_THREAD(nullfunction(struct httpd_state *s, char *ptr))
{
  PSOCK_BEGIN(&s->sout);
  PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
httpd_cgifunction
httpd_cgi(char *name)
{
  const struct httpd_cgi_call **f;

  /* Find the matching name in the table, return the function. */
  for(f = calls; *f != NULL; ++f) {
    if(strncmp((*f)->name, name, strlen((*f)->name)) == 0) {
      return (*f)->function;
    }
  }
  return nullfunction;
}
/*---------------------------------------------------------------------------*/
static unsigned short
generate_file_stats(void *arg)
{
  char *f = (char *)arg;
  return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE, "%5u", httpd_fs_count(f));
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(file_stats(struct httpd_state *s, char *ptr))
{
  PSOCK_BEGIN(&s->sout);

  PSOCK_GENERATOR_SEND(&s->sout, generate_file_stats, strchr(ptr, ' ') + 1);
  
  PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
static const char closed[] =   /*  "CLOSED",*/
{0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0};
static const char syn_rcvd[] = /*  "SYN-RCVD",*/
{0x53, 0x59, 0x4e, 0x2d, 0x52, 0x43, 0x56,
 0x44,  0};
static const char syn_sent[] = /*  "SYN-SENT",*/
{0x53, 0x59, 0x4e, 0x2d, 0x53, 0x45, 0x4e,
 0x54,  0};
static const char established[] = /*  "ESTABLISHED",*/
{0x45, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x49, 0x53, 0x48,
 0x45, 0x44, 0};
static const char fin_wait_1[] = /*  "FIN-WAIT-1",*/
{0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
 0x54, 0x2d, 0x31, 0};
static const char fin_wait_2[] = /*  "FIN-WAIT-2",*/
{0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49,
 0x54, 0x2d, 0x32, 0};
static const char closing[] = /*  "CLOSING",*/
{0x43, 0x4c, 0x4f, 0x53, 0x49,
 0x4e, 0x47, 0};
static const char time_wait[] = /*  "TIME-WAIT,"*/
{0x54, 0x49, 0x4d, 0x45, 0x2d, 0x57, 0x41,
 0x49, 0x54, 0};
static const char last_ack[] = /*  "LAST-ACK"*/
{0x4c, 0x41, 0x53, 0x54, 0x2d, 0x41, 0x43,
 0x4b, 0};

static const char *states[] = {
  closed,
  syn_rcvd,
  syn_sent,
  established,
  fin_wait_1,
  fin_wait_2,
  closing,
  time_wait,
  last_ack};
  

static unsigned short
generate_tcp_stats(void *arg)
{
  struct uip_conn *conn;
  struct httpd_state *s = (struct httpd_state *)arg;
    
  conn = &uip_conns[s->count];
  return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE,
		 "<tr><td>%d</td><td>%u.%u.%u.%u:%u</td><td>%s</td><td>%u</td><td>%u</td><td>%c %c</td></tr>\r\n",
		 htons(conn->lport),
		 htons(conn->ripaddr[0]) >> 8,
		 htons(conn->ripaddr[0]) & 0xff,
		 htons(conn->ripaddr[1]) >> 8,
		 htons(conn->ripaddr[1]) & 0xff,
		 htons(conn->rport),
		 states[conn->tcpstateflags & UIP_TS_MASK],
		 conn->nrtx,
		 conn->timer,
		 (uip_outstanding(conn))? '*':' ',
		 (uip_stopped(conn))? '!':' ');
}
/*---------------------------------------------------------------------------*/
static
PT_THREAD(tcp_stats(struct httpd_state *s, char *ptr))
{
  
  PSOCK_BEGIN(&s->sout);

  for(s->count = 0; s->count < UIP_CONNS; ++s->count) {
    if((uip_conns[s->count].tcpstateflags & UIP_TS_MASK) != UIP_CLOSED) {
      PSOCK_GENERATOR_SEND(&s->sout, generate_tcp_stats, s);
    }
  }

  PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
static unsigned short
generate_net_stats(void *arg)
{
  struct httpd_state *s = (struct httpd_state *)arg;
  return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE,
		  "%5u\n", ((uip_stats_t *)&uip_stat)[s->count]);
}

static
PT_THREAD(net_stats(struct httpd_state *s, char *ptr))
{
  PSOCK_BEGIN(&s->sout);

#if UIP_STATISTICS

  for(s->count = 0; s->count < sizeof(uip_stat) / sizeof(uip_stats_t);
      ++s->count) {
    PSOCK_GENERATOR_SEND(&s->sout, generate_net_stats, s);
  }
  
#endif /* UIP_STATISTICS */
  
  PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/

#define TEM	0
#define HUM (TEM+1)
#define FIRE	(HUM+1)
#define DIS 	(FIRE+1)
#define IOT_NUM	(DIS+1)

static unsigned short
generate_iot_stats(void *arg)
{
  struct httpd_state *s = (struct httpd_state *)arg;
  U32 tmp;
  U8 T,D;

  switch(s->count)
  {
  	case TEM:
		//DH11_Trigger();
		DH11_GetEnv(&T, &D);
		tmp = T;
		break;
	case HUM:
		DH11_GetEnv(&T, &D);
		tmp = D;
		break;
	case FIRE:
		tmp = FIRE_STATE();
		break;
	case DIS:
		tmp = SR04_GetDistance();
		break;
  }
  return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE,
		  "%5u\n", tmp);
}

static
PT_THREAD(iot_stats(struct httpd_state *s, char *ptr))
{
  PSOCK_BEGIN(&s->sout);

#if UIP_STATISTICS

  for(s->count = 0; s->count < IOT_NUM;
      ++s->count) {
    PSOCK_GENERATOR_SEND(&s->sout, generate_iot_stats, s);
  }
  
#endif /* UIP_STATISTICS */
  
  PSOCK_END(&s->sout);
}

static unsigned char alev[3]={2,2,2};
static U8 onoff = SLC_OFF;
static U32 u32Time = 0;

static unsigned short
generate_led_level(void *arg)
{
  char f = ((char *)arg)[1];
  U32 tmp = 0;
  //printf("%s\n", (char*)arg);
  switch(f)
  {
  	case 'w':
		tmp = alev[0];
		break;
	case 'r':
		tmp = alev[1];
		break;
	case 'g':
		tmp = alev[2];
		break;
	case 'o':
		tmp = Slc_GetOnoff();
		break;
	case 't':
		tmp = Slc_GetTime();
		break;
	default:
		//printf("Can't find %c\n",f);
		return;
		break;
  }
  return snprintf((char *)uip_appdata, UIP_APPDATA_SIZE, "%3u", tmp);
}

static
PT_THREAD(led_level(struct httpd_state *s, char *ptr))
{
  PSOCK_BEGIN(&s->sout);

  PSOCK_GENERATOR_SEND(&s->sout, generate_led_level, strchr(ptr, ' ') + 1);
  
  PSOCK_END(&s->sout);
}

static
PT_THREAD(led_set(struct httpd_state *s, char *ptr))
{

  char *param = NULL;
  char level[10];
  char i = 0;
  char j;
  char ledi = 0 ;
  PSOCK_BEGIN(&s->sout);

 //printf("xx: %s[]\n", ptr);

  param = strchr(ptr, '?');
  if(param != NULL)
  {
  	param++;
  }

  param = strstr(ptr, "w=");
  if(param != NULL)
  {
  	param+=2;
	i = 0;
	 while(param[i] >= '0'  && param[i] <= '9')
	 {
	 	level[i] = param[i];
		i++;
	 }

	 if(i>0)
	 {
	 	level[i] = 0;
		alev[0] = atoi(level);
		LED_SetLevel(2, alev[0]);
	 }	
  }

  param = strstr(ptr, "r=");
  if(param != NULL)
  {
  	param+=2;
	i = 0;
	 while(param[i] >= '0'  && param[i] <= '9')
	 {
	 	level[i] = param[i];
		i++;
	 }

	 if(i>0)
	 {
	 	level[i] = 0;
		alev[1] = atoi(level);
		LED_SetLevel(1, alev[1]);
	 }
	
  }

  param = strstr(ptr, "g=");
  if(param != NULL)
  {
  	param+=2;
	i = 0;
	 while(param[i] >= '0'  && param[i] <= '9')
	 {
	 	level[i] = param[i];
		i++;
	 }

	 if(i>0)
	 {
	 	level[i] = 0;
		alev[2] = atoi(level);
		LED_SetLevel(0, alev[2]);
	 }
	
  }

  param = strstr(ptr, "o=");
  if(param != NULL)
  {
  	param+=2;
	i = 0;
	 while(param[i] >= '0'  && param[i] <= '9')
	 {
	 	level[i] = param[i];
		i++;
	 }

	 if(i>0)
	 {
	 	level[i] = 0;
		onoff = atoi(level);
	 }
	
  }

   param = strstr(ptr, "t=");
  if(param != NULL)
  {
  	param+=2;
	i = 0;
	 while(param[i] >= '0'  && param[i] <= '9')
	 {
	 	level[i] = param[i];
		i++;
	 }

	 if(i>0)
	 {
	 	level[i] = 0;
		u32Time = atoi(level);
	 }
	
  }

  	if(onoff != Slc_GetOnoff() || u32Time != Slc_GetTime())
  	{
  		Slc_Set(onoff, u32Time);
  	}
  
 
  
  PSOCK_END(&s->sout);
}
/*---------------------------------------------------------------------------*/
/** @} */
